-1
votes
1answer
834 views

Encrypton method that would encrypt alphanumeric data to alphanumeric data [closed]

I need efficient way(possibly as strong as AES or AES itself) to enrypt (only) aplhanumeric data and get out only alphanumeric data, using some known library (i don't want and intend to implement AES ...
1
vote
2answers
936 views

Centralize Linux System Management

We currently maintain several linux servers and are looking to employ sub contractors. However, we wan't to keep tabs on who does what on each server. Other then creating sudo accounts on every server,...
1
vote
3answers
4k views

ModSecurity errors related to REQUEST_METHOD HTTP/1.1 and GET

I asked my host to switch on the log file, and it have increasing a lot since then. Its have been increasing with 700 mb for the last week. It’s filled with error messages related to Mod Security. ...
18
votes
1answer
1k views

Is there a way to verify a binary against the sources?

It seems like there is no practical way to verify the full integrity path of precompiled and packaged software? I can check the downloaded package itself by hashes, but I have no verification if the ...
24
votes
11answers
18k views

Prevent my site from being copied

Is it possible to protect my site from HTTrack Website Copier or any similar program? Without setting a max number of HTTP request from users.
10
votes
1answer
90k views

Can the Gmail password be recovered from the Android Gmail app?

I have an Android device with the Gmail app installed. This app can access the mailbox so there must be some kind of authentication data stored on the device (possibly an application specific password?...
0
votes
2answers
225 views

Check integrity of GnuPG inside of GPGTools?

Is it possible to check the integrity of the GnuPG files inside of the downloaded installation package of GPGTools? I know how to check the integrity of the .dmg file (compare the SHA1 hash), but I ...
-1
votes
1answer
306 views

How Facebook Determines User Browser Change? [duplicate]

I recently logged in to my Facebook from other PC and got notice. Please login from the PC you previously logged in. I want to know what information Facebook uses to determine this change? I changed ...
4
votes
3answers
3k views

Javascript Diffie-Hellman and AES protocols

I am using the BigInteger Javascript library to create a symmetric key using Diffie-Hellman protocol. I want to create 128,160 or 192-bit keys. After some research, I have found out that I should use ...
2
votes
3answers
221 views

How to manage known infected network

If you have large distributed network that is known as being infected with viruses and etc.. and you cannot format the computers becuase its large scale. What are the best ways to handle this ...
0
votes
2answers
15k views

Can you track someone using a proxy? [duplicate]

This is past experience, and is not the case anymore since I am a programmer now and have nothing to do with security anymore. However in the past I had a person constantly trying to make comments of ...
3
votes
3answers
99 views

Security of remailers

A layman's question: If I don't err, with remailers or analogous systems one sends a message to a node of a chain of nodes, which collectively perform the entire transmission. However, the message to ...
-5
votes
2answers
145 views

Protection of online image file (ancient manuscript) [duplicate]

I am going to protect an image file (ancient manuscript) which will be available online for everyone to download. I want to protect the file in these situations: When it's on the server, I need to ...
2
votes
3answers
5k views

Uploading files through an HTTPS web application

We have a client facing web site. A certificate is required to land on the login page, where upon you then need a username and a password to further login. System has Apache servers acting as load ...
1
vote
1answer
625 views

Web application vs web service security

My question is about the difference between usual security expectations from a web application (intended to browser navigation) vs SOAP web service. For a web application, an acceptable solution for ...
10
votes
2answers
2k views

Privacy risk in using Google APIs

If I use JQuery from Google APIs: http://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js Is there a privacy risk to my site? E.g. does this link enable Google to read my pages, track my ...
6
votes
3answers
685 views

Why does OpenSSL need the private key to revoke a certificate?

openssl ca -revoke signed/0A.pem -config caconfig.cnf What does this do which requires the CA's private key? Does it do anything except updating index.txt?
3
votes
1answer
2k views

NIST test vectors for HMAC-SHA-256

I'm working on an implementation of HMAC-SHA-256 in classic ASP (legacy code). I currently have it working, and the resulting values are correct compared to some test cases I came up with along with ...
6
votes
1answer
772 views

SSL - Null Prefix Attacks Still Possible?

At DEFCON 17 (2009) Moxie Marlinspike gave a talk were he was able to use a malformed certificate signing request to get SSL certs signed for domains he doesn't own. The gist of it was that for the ...
4
votes
3answers
2k views

SQL injection using letters and numbers?

I was wondering if it is at all possible for a hacker to perform an SQL injection attack using just letters and numbers. For example, let's take a look at this PHP code which uses regular expressions ...
2
votes
3answers
2k views

Malware not showing up in virus scan

I have some malware on my computer at work that I'm having a hard time getting rid of. I'm only interning there over the summer, so I'm guessing that it was downloaded by the previous user because I ...
3
votes
2answers
1k views

SJCL : convert ascii to a BitArray & compute random numbers

I am using the Stanford Javascript Crypto library and i'd like more information about it. 1.) I have an ASCII text and a random 128-bit key. I want to concat those two things, so I convert the ASCII ...
0
votes
4answers
179 views

Control over IT security

In pharmacy the safety of drugs is under fairly tight control by national authorities, e.g. FDA in US. The risks of patients taking drugs are thus very effectively minimized, though understandably ...
2
votes
3answers
2k views

Reversing Password Hashes [duplicate]

if someone got hold of the hashes of all passwords for a website, how do they 1) get passwords from the hashes. As far as I can tell from searching the internet everything seems to say do a dictionary ...
0
votes
1answer
1k views

mprotect at kernel level

What would happen if a kernel-level process sets some of its memory pages as PROT_NONE with mprotect and another kernel-level process tries to read one of these protected pages? What is the equivalent ...
6
votes
5answers
5k views

Becoming HIPAA Compliant

What is required to become HIPAA Compliant? Do I need to take a test or do I just need to follow a certain set of guidelines? EDIT: Just to provide my background. I am a small IT Firm and we would ...
-4
votes
2answers
270 views

Steganograpjy or Digital Watermarking [closed]

I would like to use the best algorithm to hide 1024-bits inside an image. What is the best option to implement this? Is it by using Steganoraphy (i.e. LSB) or Digital water marking?
11
votes
4answers
2k views

How dangerous is it to store password in plain text on sites like GitHub?

I have a few private repositories set up on GitHub for some of the projects I am working on for my company. These applications connect to databases and I have database authentication credentials ...
-3
votes
1answer
344 views

Development of asymmetric encryption algorithm? [closed]

I am planning to develop (make some minor changes) to asymmetric encryption (i.e. RSA). Any suggestions please?
29
votes
3answers
16k views

How risky is connecting to a hidden wireless network?

According to something I spotted something in a set of directions for connecting to a hidden wireless network from windows 8 found here (located under Step 1 > "Troubleshoot connection problems" > "...
0
votes
3answers
3k views

Is there a combination of Windows permissions that allow execution of a .NET executable but not reading nor copying its content?

I suppose that if a file is executable by anyone, in other words, if a user has enough permissions to execute an executable in Windows, it will be possible to read the contents of the executable and ...
5
votes
1answer
812 views

Why was ECMVQ dropped from NSA Suite B?

I've found two mentions on Wikipedia that Elliptic Curve Menezes–Qu–Vanstone (ECMVQ) was dropped from NSA's Suite B however they seem to imply different reasons. One mention is preceded by talk of how ...
-9
votes
3answers
490 views

Is it legal to hack a website that distribute my copyrighted materials? [closed]

I sell some .pdf files online. But soon they are all over the web because after someone buys the .pdf and puts it on various websites. Is it legal to hack those websites? Are there other ways to ...
7
votes
1answer
580 views

different portscan tools give different results

I have different results as of my open TCP ports. When using nmap -sS 127.0.0.1, I get some 5 usual open ports, but when using osx built-in tool as stroke, I get those 5 ports plus 5 extra ports. How ...
-5
votes
1answer
387 views

Can I develop an SSH client for iPad in Sweden and sell it in Apple App Store? [closed]

I wonder, if I am allowed to develop an SSH client for distribution through Apple App Store without breaking any export regulations? I don't really know much about the encryption algorithm. Below is a ...
2
votes
1answer
209 views

Multiple OCSP calls

We facing slowness issues with out Web start application when upgraded to the Java 7 update 25, (very slow to open the login screen). After our investigation we see that now Java security has enabled ...
3
votes
3answers
2k views

SSL vs Encryption

I am working on creating an android mobile application which needs to connect to a server from time to time. The application makes use of sensitive data which I would not like to get into the wrong ...
0
votes
1answer
156 views

Risks of software backdoors [closed]

Risks of backdoors in software are evident ever since Ken Thompson's Turing Award Lecture "Reflections on Trusting Trust". Certainly this applies to hardware just as well. Limiting ourselves here to ...
-3
votes
1answer
291 views

How this test prove my application is vulnerable to clickjacking attacks? [duplicate]

I have downloaded the "Clickjackingtool" and done the followings steps. Step 1:- I have opened the clickjackingtool and paste the URL and click GO button(Image 1). Step 2:- I have opened the ...
3
votes
2answers
516 views

Injecting information in a web page (Gmail). Does it raise security problem?

I am developing a Google Chrome extension which encrypts/decrypts emails for Gmail users. So, I detect encrypted emails when the user opens an email on using tags. Once an encrypted email has been ...
8
votes
3answers
554 views

How to estimate the cost of an application vulnerability?

I've seen data on the cost of a breach including lot of surveys and research by Verizon and the Ponemon Institute. But in terms of an actual vulnerability, what are the factors to consider to ...
17
votes
2answers
28k views

Specific risks of embedding an HTTPS iframe in an HTTP page

I need help listing the specific risks of embedding an HTTPS iframe that enables credit card checkout inside of an HTTP page. Are there security issues with embedding an HTTPS iframe on an HTTP page? ...
15
votes
4answers
14k views

Tor and regular browser side by side. Does that make sense?

Can I use a Tor browser session and a regular Firefox session side by side without corrupting the security of the Tor session? E.g. when I download a new Eclipse version or when I'm searching for ...
2
votes
2answers
752 views

Ways to obfuscate web browsing habits [duplicate]

Web browsing metadata provides a lot of insight on person's habits. How can I reduce that insight? Is there something like "Detachment 2702" (http://en.wikipedia.org/wiki/Cryptonomicon) plugin for ...
9
votes
1answer
2k views

HKDF and key stretching

I thought that all key derivation functions would do a key stretching phase, by iterating some kind of process. But I can't see that process in HKDF. HKDF doesn't do key strengthening? If I have a ...
3
votes
3answers
4k views

How to capture wireless data from an intruder using a home router

After my house mate experienced consistent ping spikes whilst gaming, he asked me to check/set the wireless router password. I did and I found two intruders from obviously nearby. How can the data ...
2
votes
4answers
329 views

Session token is not changed on login?

I have logged into my application and I received a session token. When I navigate to another tab, the application pertains the same session token. Is it normal behavior that the session token does ...
11
votes
11answers
8k views

Besides IP addresses, how else could one be identified? [closed]

OP: I'm curious how else an actor seeking to identify someone online could accomplish this task besides just using an IP address. What methods would they employ? What knowledge must they have of the ...
-6
votes
1answer
242 views

White Hat Communities [closed]

I've been searching Google for a bit and I'm having difficulty finding credible White Hat forums. For example, when one wants to discuss bitcoin they go to bitcointalk, is there a white hat equivalent?...
0
votes
2answers
250 views

How does a virus scanner inspect URLs entered in a browser?

I have a virus scanner installed (avast on Windows 8) and it blocked the access to malicious websites in Chromium. There's no proxy activated in Chromium so how is the scanner capable of rejected a ...

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